Patents by Inventor Akio Shioiri

Akio Shioiri has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Steam injector system
    Patent number: 5262091
    Abstract: A steam injector system comprises a plurality of steam injectors each being provided with with a check valve adapted for water supply, a check valve adapted for steam supply, a check valve adapted for overflow and a check valve adapted for discharge and the respective water check valves, steam check valves, overflow check valves and discharge check valves are connected. In another aspect, a steam injector system comprises a plurality of first to last stage steam injectors arranged in series with each other, the last stage steam injector being provided with a relief valve disposed at a last stage overflow drain port, and a pressure pulsation absorbing device is disposed at least between the last stage overflow drain valve and the relief valve.
    Type: Grant
    Filed: May 21, 1992
    Date of Patent: November 16, 1993
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tadashi Narabayashi, Hiroshi Miyano, Osamu Ozaki, Wataru Mizumachi, Akira Tanabe, Akio Shioiri, Hiroshi Tonegawa, Takenori Ishiyama